Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '207b5cd789cf2aebdb3c885cf84376d04988f6961859f0c17a294ba637135af1' 
  AND token = 'TTAWCNpWcI7KHyTYnWYIK1pBj9CCXZe4ntxH7AK/KSA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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