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SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'd37bf4a2a0f7627b5fea10aa44c3093a73f11a6c3ac4d5b8e4e49632b00981cf' 
  AND token = 'Jz3hoQ/J6OCe1mHYO3Apl1O0UotMl2pWOj6OsEZS9zQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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