Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e569bd88f2a27dfa9862b13897f2e139b582749572824f6d3bf9e5a151ef6bdd' 
  AND token = 'n39cZ26CfcjlUQ4W4ivZewEmuVu88xkCNNKp7umvg0o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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