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SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '8228853b824a4ce90d0c8086c48f714d704df45032376d90a0d37bfc762f97e4' 
  AND token = 'BbaIXX1ZMiw8cC9veH5AZDM3IFJ1mrDnuPg4EW4unTI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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