Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a1895dacd47b097997cbdd5c9c92d7a64f00d0f29910d4d831ad4fe228c8d2bc' 
  AND token = 'kzSxuF/4i30LXNXYJJf36qDyrTGXxSMa3T0di8YjPy0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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