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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1eec07f74e2fd565f265dc2f28dc2c4c6ec2f1213f31855161680b26b5a175e2' 
  AND token = 'pkaXWNyEFaPdxqihTr43NLT3q9p7JhvwfiS9dQiyHVc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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