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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4af118ba452b62ae274cbf63749b262255938a036ba3449441c49388e4d6b5ea' 
  AND token = 'ZRFqPgz7JZMPML781I8taDkZeqRN5EM5s/dsZZdXBoU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00511

JSON explain

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