Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e4b4790452f4f2051982d51db21dbb4ac082ffd1f191265e5e321c09fa0017bf' 
  AND token = '4idfAZdUzyHU8G4gCIsmYY06wZ/muFJ/trlyVEpfHDk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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