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SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '22ecfcd88ffe6c385061560eef4a8f580d46e04f2d83aba3b87a9e23f5fa778e' 
  AND token = '2TE5RBxYGMROw3xpeeh8he2BDc16hHlTyVC+itllxqI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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