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SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '205ba9a437186adea30621fd5c236799fd7f8e4ac418aaa610c83324020ae0e5' 
  AND token = 'peyw6OvIHAUTjGTgKboEuDkwy4yvE3swFe2OUcpbkSY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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