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SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '59da8dad1b20b1e9763c7e56c36228b01bfb3aee6e8f9dbcfbf85e722e9bc3cd' 
  AND token = 'Do8Yzx1zXmfTbOw/fMN5jvToItY+Y6Yx3Zv22ijUh2A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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