Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fb7b207e07d34f617f4e112a3943aba494e9b25687ca06f4cf71d34404ec4505' 
  AND token = 'z26xaZg3t6rsqThxwVgARCOUPJZchSLHYmS3wSf6cNQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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