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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c92d6179080c73cd1c067d30ddb7dc3fdbbd533cc6a4ad3d602a6b6eb8b15129' 
  AND token = 'EkOd7z1/3CK8YKYpn6FZ/4+Mv6N6NqlY1VEA8939FVY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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