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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7eb124cccb85d674bcffeeaffef1fa97f34fce6b0493e46ed6b687eac7432528' 
  AND token = 'NSp+pUENovtltk9aLCGiVa2ehwwT6J4zEv655LSl198=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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