Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4b2e0a77aab6ff2c22310aa762ea52a8108dd67f0ba0601aeecbbcfa57e3c64f' 
  AND token = 'jJKtweIG0f71BqnwoRBFsOeIe5JOyc+iGsciRR8xz1M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}