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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '07a98b8840de2fa72476ebb18df3ba4483457bcbe92d04ccf42c998b8a0cbf22' 
  AND token = 'FEWmGaS8YsSggpWLItcoQ6XzzM+srmmJAAZ++MINDzA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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