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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '64f549c6b08615e1a1feacc7a70cd914bae84b981f6709aba633bc4229cd7740' 
  AND token = 'A0mqQA28nxm9atft1HO0n6ozgg57TbaRGcS8HkUJpeo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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