Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e1c460fc950cf226e1471f69846d13286bc187ba5b5838a445d91c75ebf2d33a' 
  AND token = 'EKRihXW4CL3wkilqkJiRmMqIM296VaIpQiWAXiR8x9I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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