Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'b53a0c492a053c74e4b27c428b726f366d553ac1474337eeeeeb540f6f451f59' 
  AND token = 'xEuv/EvR+0JgupNLNCTJLfz8y5dtCTWfx2MQ9X5E3s4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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