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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '35692176da184a0095cd0aa4c315ce9813a5f6a46c4e2dbd0d921064f855f916' 
  AND token = 'PMjBmeRQKNjeKP8wBS4/Kbi6xfZn16cxEa0CWxJetNU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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