Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '73e805b8828a2046592361d6a69978981e053d2bb86342598ced47090baf55d4' 
  AND token = 'uE3wneSzW8BrKS86WedSYTWPdXXjowKyJQjvN+z6xm8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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