Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0843d8ab3be3f553fcbb3c01b1369a437d4bd516194a877cfae6bd85027f8afe' 
  AND token = 'OouVzX7SidrDay/kq1yrmtRT7sElYSLmlyuSPnxKJeE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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