Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'f22358e2738e85841f39b969a583d620223da32b13250c72af0a09bd394a0e6e' 
  AND token = '3aDeDXRAC8uBB62PQD+xS2LQtODm4akWPwd2PX6wNWQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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