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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0c396c79dfc55ef671489d42e5d2c9f73232e67f3874b4f222bfc0228b8a22dc' 
  AND token = 'rTbWRTEIciaTxyVP/keAQnrtiu10L9kU5yy4sxwLKV4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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