Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '64ff45e77ebb4a7722374aa6faea33645241942038c0aba8ed965f2124d8c25e' 
  AND token = 'RHLPnmeFe/eyLk+K1z3sVKo2fmeSSVEBY5hQUHgXIFY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}