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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '66037964bce0a1172831ee2f7fa0eae3acf8329a6242eb3a404614ecdcefc907' 
  AND token = 'vGLNA9UWKPhvtOyuPS1K5a9cfE9Q0B7xW0/ruGfYrQc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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