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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '35fd59137e48ebd95ce2764a4326f66396c72ea111305c18fc0225389703fb5e' 
  AND token = 'pML6DMUpq9bjgNvF46LAk16AE5s3Lk/3p/8I4FGSZcc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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