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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f7c06f4a3974f80df17c255ba792a9ac7cf35fa8a82a81c7d0db06625817985f' 
  AND token = 'SlJ/8nSVXGeOL0OS1pduiu62FSuSOSTfpgJ8G/Wpr+Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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