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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '95ca9aedbf2c8c147f18b7503192255db32f38b21b5e6bc86e7955407a4724ae' 
  AND token = 'h5mFu0jP2KJdXTJEVI7e/tTe9SpSA0YS6Zs2lCitUxI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00100

JSON explain

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