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SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = 'bf567ef3f081a61ce4cbcbcb5e91ca747f23f711e0d9e45adf8e06cc7a697a15' 
  AND token = 'RwHPzzXgfUV6dMT+iE3YlPBzP3jr7XgauFcN0Z5Dgd4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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