Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4212601a756b18e9080e1114c6f7453d3836c9e02e4ad13f39ec879cfe737567' 
  AND token = 'WXT+NZvNQ/R5+ooKQUWkU8l65tOvwAtPOKNHC7RDts0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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