Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '8eb4d954ce882b5ad6a9d3be015550efa10d40795b866ffce8d3c221fa683768' 
  AND token = 'GYgVy3k/cJlM1K4/O/oE/xl8gDNV42dVNe92517BLA8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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