Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2f3b64ede1d8e5e2b8254b79d772352dfa03acc79f088662a8a2153c1363ff4c' 
  AND token = 'CVYpf5te0xDWwCvz9yIQ1YH2SIF3zmL0dPl86B0QYWo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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