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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0e70456a19bd528cdccbf971e66f59f9a11d75ca6a1b062da117e763e4512dc9' 
  AND token = 'Gi6PrJC11oGwYC6O0vUgh1+ogksNKikJEu9vVA1QrIk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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