SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '022cf6fb1805a174f4cc9a9606d5b9362ece49cc164181188c77c9b3305d664c' 
  AND token = 'q9w42ZtwYBa0eleYUXi4x3Q+jW732KilNGMHJwHivd4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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