Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '446a9aaec29ae29b61e22956fa83af6aa469557583812af720fb196734813c4e' 
  AND token = 'pSrVXcSi2GMJF263b0dJC5UVA7t3WJKWn716nP+IWBY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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