Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3d92f5e8214a9d1850f252e8fecdf973e37082887572cae32d86ed0ebb2031d0' 
  AND token = '7jchg+Hl6kEcJ0WFMazpRGs+ZleGqRHa8Sxd4mx97BA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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