Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '4680f67faf6b41e8e2fa274b475ae62fb27c001082c4a08c922300c750355df0' 
  AND token = '0cayy8s2vi3kevw4iMQSlO5thMW7M+e2KENHWsbGKFE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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