Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e5822718f07d5f567f66c4c49108e42cec70045034fde8e66713667cbd8d4332' 
  AND token = 'EExxy/Azbw1RrTSLWYHXXPTF5JE/5MJUxOnSeLwmr4g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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