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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5f4d502ed32c94e7d5ecf2992971f461915bc956833e995941400ae8095f4df3' 
  AND token = 'Oj3g61nIlg9sqIi7nuzpUEN3XhA7a6ZhX4kPedemYKA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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