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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '17f44cc34698e8ce71fd00b559e8a1d6841e79fd315c047caeeda974dceb59fa' 
  AND token = '1UoAVTklUSQ/eYt6Y30Vv2kXN6/OtmjcCYJwg/iQksA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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