Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7ef549d0266126d435e5d15aad7b10e48e6da12d590d9c22faf80c00d61707e6' 
  AND token = 'sLRlLVrR4H6yP/WI+hRW5GJdF+KVAJKwLA3COy4YjjA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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