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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e2d6ec9bc4374a1f9963d417b8465275060d8bec7fc1eb4579774a66b5288ae4' 
  AND token = '0SkOfKtebK13Cwy36VbBMwOWLcVb9CoOZiuYJMOpd6g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00201

JSON explain

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