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SELECT 
  1 
FROM 
  cscart_multi_declock_keys 
WHERE 
  key_id = '32b7c70c0fad104db57e99fe180c2c6a0e57f9a9215fdb30dd1d753c71bbacde' 
  AND token = 'aIDYs8GEilVVZJpLKcbt2LVXez8BzUQhlgv1Ekc7XJ4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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