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SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = '5a5610da2c84887438030329c9853fe0b7ce69861342d54960d2ff4a12b845fb' 
  AND token = 'gQacKIOHj74kS2Qtu8GlcQ9ZWqN2y6I5phf/gC/SEPk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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