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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1ecf2c3e954dfb3c6663edbf15a5606b02076508204bd73f96e5c3a5b3b8e2ce' 
  AND token = 'a5iWYwedJJvRP68CllZ/jnUFwe23xdnDvbHlbYxxZAQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}